Thao, Hoang Minh, Tran Thi Hien, Dao Duy Anh, and Pham Thi Nga. 2017. “Mineralogical Characteristics of Graphite Ore from Bao Ha Deposit, Lao Cai Province and Proposing a Wise Use”. Vietnam Journal of Earth Sciences 39 (4):324-36. https://doi.org/10.15625/0866-7187/39/4/10728.